Power Supply - Quectel FC80A User Manual

3.3. Power Supply

The following table shows the power supply pins and ground pins of FC80A.
Table 5: Definition of Power Supply and GND Pins
Pin Name Pin No.
VBAT 36
VDDIO 34
1, 3–8, 10–11, 23, 32, 39, 47
GND
FC80A is powered by VBAT and VDDIO, and it is recommended to use a power supply chip with
maximum output current more than 1.2 A. The following figure shows the recommended turn up timing of
FC80A.
32KHz
(WLAN_SLP_CLK)
VBAT
VDDIO
WLAN_EN
BT_EN
NOTE
VBAT and VDDIO should not rise 10–90 % faster than 40 μs.
1.
2. VBAT should be up before or at the same time as VDDIO. VDDIO should not be present first or be
held high before VBAT is high.
FC80A_Hardware_Design
Description
Power supply for the module
Power supply for module's
I/O pins
90% VH
2 Sleep Cycles
Figure 3: Turn Up Timing
Wi-Fi&Bluetooth Module Series
Min. Typ. Max.
3.2 3.3 4.5
1.7 1.8/3.3 3.6
Unit
V
V
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